To reach Christiansted, St. Croix in this distance one would set out from Rock Rapids, Ia bearing 124° or SE and follow the great circles arc to approach Christiansted, St. Croix bearing 140.5&deg or SE .

Christiansted, St. Croix has a tropical wet and dry/ savanna climate with dry winters (Aw) whereas Rock Rapids, Ia has a hot summer continental climate with no dry season (Dfa).

The annual average temperature is 19.3 °C (34.7°F) warmer.

Average monthly temperatures vary by 30.9 °C (55.6°F) less in Christiansted, St. Croix. The continentality subtype is truly hyperoceanic as opposed to truly continental.

Total annual precipitation averages 427.4 mm (16.8 in) more which is equivalent to 427.4 l/m² (10.49 US gal/ft²) or 4,274,000 l/ha (456,919 US gal/ac) more. About 1 2/3 as much.

The altitude of the sun at midday is overall 23.4° higher in Christiansted, St. Croix than in Rock Rapids, Ia.